Got new used car with new used radio
Regarding balance and fade contols, which pop out for adjustment and then can be pushed in, so that only a little sticks out:
"Adjust the balance (or fade, for the other button) and push the button back in. The balance (or fade) will be displayed and continuously updated while the button is pressed".
What does this mean?
How can it update the fade or balance setting? Is the knob not a direct adjustment but something that controls an electronic circuit? I can see that could be, but what standards would it use for modifying the balance and fade? Would it use sensors to tell which seats are occupied? I've thought about that for years** but if any car did this, I'd have thought I would have heard about it.
Right now, both adjustments are in the middle, and maybe I'd see something on the display if I turned one of them, but I'm asking here first.
**GM cars did and maybe do use the Right Rear speakers to provide the same channel as the Left Front (and Left Rear and Right Front had the Right channel) and they did this to make up for the fact that almost everyone sits in a corner of the car. I had GM cars for 21 years although maybe the first ones (1965) didn't have a stereo radio? I'm sure the '67 and '73e did and the sound was fine.